Cable-operated plow and the like.



c. L'.EWBANK. CABLE OPERATED PLOW AND THE-LIK E.

APPLICATION FILED MAY l?. 19|?.

Patented Apr. 30, 1918.

2 SHEETS-SHEET c.-L. EWBANK.

-CABLE OPERATED PLOW AND THE LIKE.

APPLICATION FILED MAY 17| 19|?.

' mm Patented Apr. 30,1918.

2 SHEETS-SHEET 2.

tllWlTED @mail CASE L. EWBANK, 0F CENTER, COLORADO.

CABLE-OPERATED PLOW AND THE LIKE.

To all 'whom t may concern: f

Be it known that l, CASE L. EwBANK, a citizen of the United States, residing at Center, in the county of Saguache and State of Colorado, have invented certain new and useful lmprovements in CableGperated Flows and the like, and do hereby declare the lollowing'to'be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to plows, and more particularly to a type of plow which is provided with a motor and suitable drums, the latter adapted to be connected in suitable order with a cable fixed to suitable supports at the sides of a field to be plowed.

It is one ofthe important objects of the present invention to provide in a plow of this type winding drums having on their peripheries grooves to receive the haul or fixed cable which latter is adapted to be rove over and about and from one to the other of these drums so as to secure the necessary amount of friction to cause the plow to be propelled alternately `across the field when the motor mounted upon the plow frame is operatively connected to the driving drums, and one of the objects of the invention is to provide an arrangement of the cable drums so as to eliminate as far as possible the wear incident to the passing of the cableV from one of the drums to the other.

With the above objects in view my present invention contemplates the utilization of a pair of grooved drums, these drums being so disposed with relation to each other that their grooves are relatively staggered so that the grooves on one drum will be disalined from 'the grooves on the companion drum, and in this way causing and directing the cable in its movement from one drum to the other to be deflected with the least possible angle with relation to the faces of the drum from one groove to the other.

With these and other objects in view as will be rendered manifest in the following specification, there is described in the following specification one embodiment yof the invention which is shown in the drawing wherein:

Figure 1 is a side elevation ofthe improved plow with the end portions broken away.

Fig. 2 is a plan view of the plow similarly broken away at its end portions.

Specification of Letters Patent. Pgttqsntdl Apr'. 3U, 1918.

Application led May 17, 1917.

Serial No. 169,326.

Fig. 3 is a central sectional view through the reversing mechanism connecting the motor to the drum shaft.

Fig. 4f is a sectional view showing in detail the operating means for causing the shift of the shiftable pinion in the reversing mechanism.

Fig. 5 is a plan View ou a somewhat enlarged scale over Fig'. 1 showing ille roli'ti Je positions of the two companion cable drums.

My invention is shown as embodied in the present illustration upon a plow having a suitable frame 2 consisting of parallel side members which may be suitably transversely braced, and intermediately between these side members are provided longitudinal girders 3 which carry a motor 4i of suitable type, and also journaled on the intermediate girders 3 of the frame is a pair of cross shafts 5 and 6. Extending from the engine or motor i there is provided a driving shaft 7 which is connected by a universal joint 8 to the crank shaft of the engine and also has at its opposite end a pinion 9 adapted to be thrown selectively into engagement with a pair of companion beveled gears 10 and 11 which are secured upon a jack shaft 12. One end of the jack shaft is provided with a pinion indicated in dotted lines in Fig. 1 at 13, this being adapted to engage with the toothed portion 14 of a drum which is secured on the shaft 5. Intergeared or intermeshed with the gear 14 there is another and similar sized gear 16 which is secured to the shaft 6.

For the purposeof reversing the direction of rotation of the jack shaft 12 as may be desired, the pinion shaft 7 is shown as provided with a box 7 having laterally projecting wings 7 a, these being adapted to en-v gage with downwardly projecting wedges 7b on each side of the box 7, these wedges being connected to the transversely projecting arms of a lever 7c which is pivoted at 7 d upon the top of the gear housing inclosing the gears 10 and 11. When the lever 7 C is set in the full-line position indicated in Fig. a the box 7 in which the gear 7 is mounted is held in a neutral or intermediate position so that the pinion 9 is held fromengagement with the adjacent teeth of the beveled gears 10 and 11. By throwing the handle 7c to the position shown in dotted lines, wedges 7b cooperate to cause and permit the box 7 to shift so that the pinion 9 will be carried into intermeshing engagement with the gear 11 for instance. If the lever 7C be throwny in the opposite direction from the position shown in dotted lines in Fig. 4, then the pinion 9 would be shifted into interengagement with the opposite gear 10 thereby changing able mechanism, as, for instance, by rac is 22 'attached thereto engaging pinions 23 on a shaft 24 which may be rotated through means of a worm and gear connection 25.

Cnc of the important features of my present invention relates to the provision of drums over which the hauling cable C may rbe rove in a peculiar manner with the object in view of preserving the cable from wear by avoiding as far as possible undue friction owing to the deflection or `passing of the cable angularly across the periphery of one drum to the next drum as the cable passes back and forth over the peripheries of the drums. To that end the cable C is shown as being passed around the bottom of a vdrum 30 which may be secured on the shaft 5 in any suitable manner or may be attached to the gear 14 as here shown.l This drum 30 is shown as provided with a series Lof three parallel grooves 30a of suitable depth and width as determined by the size ofthe cable C whichis rove around the pulley. The cable C passes upwardly from the lower portion of the drum 3.0, as seen in Fig. l, and thence onto an upper drum 3l which may be secured on the shaft 6, or, as shown, secured to the gear 16this drum 31 being provided with a suitable number of 'grooves 3lii as here shown being two in number. As seen in Fig. 5 the cable C passes around the .bottom of the Ifirst groove and thence upwardly and slightly at an angle to the periphery of the drum 30, over the top ofthe first onlower groove inFig. 5 of the drum 31- thence around thisdrum on its outer side and around ,the bottonnof the first groove,

.thence upwardly as at, a onto the top of the second groove of the drum 30, passing around this groovek it comes upwardly as at b' and passes around the second groove as at c ,of thendrum 3l, thence around this drum on the outer sideand upwardly as at ci and around the uppermost or thirdgroove as at e, ofthe drumO around which it passes from the bottom side andv thence leads off as aty f to the ,opposite-end oftheI field. l

To achieve the purpose of the present in- A vention the drums 3Q and laresovset with relation .to each otherthattheir lgrooves 3Qa and Blaare staggered with relation to each other. Inthis way the cable is deflected at ythe points a, and d, with a minimum degrec-of angularity 1n passing laterally from the groove ,ofv one drum onto the groove of the next, and it has been found that by disposing the drums with their grooves staggered orlaterally offset a distance of about one-half of the width of the groove that the minimum angular deflection of the cable from one drum to the other is achieved. This therefore obviates the friction which is created if the cable were caused to pass from the groove of'one drum onto the groove of the opposite drum if the respective grooves on the opposite drums were alined with each other instead of being deflected as here shown.

Any suitable means may be provided for controlling the headway or steering of the plow back and forth across the ield, and in the present invention the side wheels 2 of the frame are pivotally mounted thereon and have lever arms connected by links 40 to a lever 4l, Fig. 1, which is mounted upon a shaft having a pinion 42, this in turn being engaged by a worm 43 operable through means of a steering post 44.

While the general term plow has been used throughout the foregoing specification and will be used in the claims, it will be understood that the present invention is not confined, in its luse, to those implements which are ordinarily termed plows but that itmay as readily be applied to and used to operate any implements or machines adapted to 1the clearing, preparing or tilling of the soi What I claim is:

l. In a chain or cable tractor, the co1nbination with a wheeled frame, a motor on said frame, a pair of drum shafts having directly intermeshing gear wheels and carrying grooved drums set with their grooves in respectively staggered, parallel relation, whereby the hauling cable is deflected laterally from a groove of one drum to a groove of the other drum a distance approximating one-half the distance between the centers of parallel grooves on one drum, and means connected to said motor for driving the shafts.

2. In a cable tractor, a frame having supporting wheels, a set of driven drums mounted on said frame each having cable receiving grooves; those on one drum disposed oliset as to those of the other and a cable led obliquely a plurality of times between and around said drums.

3. In a cable tractor, a wheeled frame, a pair of parallel shafts journaled in dilferent horizontal planes on the frame, driving gears for said shafts, a pair of grooved drums on the shafts, and a cable leading from one end` onto the lower drum thence in a plurality of bights around said drums and then off of the said lower drum.

4. In a cable tractor, a wheeled frame with a plow beam, a pair of parallel cross shafts journaled on the frame, directly intermeshing gears, one on each shaft, drums on said shafts, a cable rove around said drums, and a jack shaft having a pinion engaging one gear, and a driving reverse gear for the jack shaft.y

5. In a cable tractor, a wheeled frame, a pair of drums mounted on the frame and having respectively staggered cable-receiving grooves, the axes of said drums being disposed in di'erent horizontal planes, a pair of intermeshing gears, one for each drum, and a cable passing around and obliquely between said drums, and leading on to and olf of the lower drum in a plane below the frame.

6. In a cable tractor, a wheeled frame, a motor on the frame, a jack shaft, driving and reversing means connecting the motor and jack shaft, a pair of parallel drum shafts, a pair of intermeshing gear wheels, one on each of said parallel shafts; a pinion on said jack shaft engaging one of said gears,

@oplet of this patent may be obtained for cable drums on the shafts, and a cable rove in bights forming a figure 8 over and between the drums.

7. In combination, a pair of tandem drums, and a cable rove with circular bights on each drum with strands crossing each other between the drums, the ends 0f the cable extending tangentially from a common side of one of the drums.

8. In a cable propelled vehicle, a pair of cable drums and a cable rove obliquely a plurality of times between the adjacent portions of the drums and substantially entirely around each drum.

9. In a cable propelled vehicle, a pair of cable drums set with sides of their peripheries in relatively close position, and a cable rove obliquely a plurality of times between the adjacent portions of the drums and sub stantially entirely around each drum.

In testimony whereof I affix my signature.

CASE L. EWBANK.

ve cents each. by addressing the Commissioner of Patente.

Waohinton. Il. C. 

